[Leica] Filters on a 15 mm M lens

["Frank Filippone" <red735i@earthlink.net>]

As much as it is usually anathema, another approach for using filters is to
put glassine filters on the BACK of the lens, essentially on the rear
element holding ring.  The filters can be held on in many ways, but I use a
tiny bit of vaseline on the rear element ring, then deftly apply the
glassine filter.

Works great with a Nikonos!

Frank Filippone
red735i@earthlink.net